Merge branch 'protover-rust-impl_squashed'

src/or/include.am

@@ -78,6 +78,7 @@ LIBTOR_A_SOURCES = \
 	src/or/parsecommon.c			\
 	src/or/periodic.c				\
 	src/or/protover.c				\
+	src/or/protover_rust.c				\
 	src/or/proto_cell.c				\
 	src/or/proto_control0.c				\
 	src/or/proto_ext_or.c				\

src/or/main.c

@@ -60,7 +60,6 @@
 #include "circuitlist.h"
 #include "circuituse.h"
 #include "command.h"
-#include "compat_rust.h"
 #include "compress.h"
 #include "config.h"
 #include "confparse.h"
@@ -128,6 +127,10 @@
 
 void evdns_shutdown(int);
 
+// helper function defined in Rust to output a log message indicating if tor is
+// running with Rust enabled. See src/rust/tor_util
+char *rust_welcome_string(void);
+
 /********* PROTOTYPES **********/
 
 static void dumpmemusage(int severity);
@@ -3111,14 +3114,13 @@ tor_init(int argc, char *argv[])
                  "Expect more bugs than usual.");
   }
 
-  {
-    rust_str_t rust_str = rust_welcome_string();
-    const char *s = rust_str_get(rust_str);
-    if (strlen(s) > 0) {
-      log_notice(LD_GENERAL, "%s", s);
-    }
-    rust_str_free(rust_str);
+#ifdef HAVE_RUST
+  char *rust_str = rust_welcome_string();
+  if (rust_str != NULL && strlen(rust_str) > 0) {
+    log_notice(LD_GENERAL, "%s", rust_str);
   }
+  tor_free(rust_str);
+#endif
 
   if (network_init()<0) {
     log_err(LD_BUG,"Error initializing network; exiting.");

src/or/protover.c

@@ -27,6 +27,8 @@
 #include "protover.h"
 #include "routerparse.h"
 
+#ifndef HAVE_RUST
+
 static const smartlist_t *get_supported_protocol_list(void);
 static int protocol_list_contains(const smartlist_t *protos,
                                   protocol_type_t pr, uint32_t ver);
@@ -735,3 +737,5 @@ protover_free_all(void)
   }
 }
 
+#endif
+

src/or/protover.h

@@ -70,11 +70,15 @@ typedef struct proto_entry_t {
   smartlist_t *ranges;
 } proto_entry_t;
 
+#if !defined(HAVE_RUST) && defined(TOR_UNIT_TESTS)
 STATIC smartlist_t *parse_protocol_list(const char *s);
-STATIC void proto_entry_free(proto_entry_t *entry);
 STATIC char *encode_protocol_list(const smartlist_t *sl);
 STATIC const char *protocol_type_to_str(protocol_type_t pr);
 STATIC int str_to_protocol_type(const char *s, protocol_type_t *pr_out);
+STATIC void proto_entry_free(proto_entry_t *entry);
+
+#endif
+
 #endif /* defined(PROTOVER_PRIVATE) */
 
 #endif /* !defined(TOR_PROTOVER_H) */

src/or/protover_rust.c

@@ -0,0 +1,19 @@
+/* Copyright (c) 2016-2017, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/*
+ * \file protover_rust.c
+ * \brief Provide a C wrapper for functions exposed in /src/rust/protover,
+ * and safe translation/handling between the Rust/C boundary.
+ */
+
+#include "or.h"
+#include "protover.h"
+
+#ifdef HAVE_RUST
+
+/* Define for compatibility, used in main.c */
+void protover_free_all(void) {};
+
+#endif
+